Mortal Challenge (Su)

When a nephilim spends a standard action to roar a battle challenge, all humanoids and monstrous humanoids within 100 feet of the nephilim must make a DC 18 Will save to avoid becoming frightened for 5d6 rounds. On a successful save, the creatures only become shaken for that time. Creatures with more HD than the nephilim become shaken if they fail their save, and suffer no effect if they succeed. A creature that succeeds at the save is immune to that nephilim's mortal challenge for 24 hours. This is a mind-affecting fear effect. The save DC is Charisma-based.

Soul of Sorrow (Ex)

A nephilim gains a +2 bonus on Will saves against fear effects and any effect that causes sorrow.

ECOLOGY

The nephilim are the offspring of demigods who bred with humans. This joining resulted in a race of giant-sized beings possessed of a shard of divine power and the mortal consciousness of humans. A nephilim stands 11 feet tall and weighs 1,100 pounds. Its divine heritage grants it a lifespan of almost 600 years.

Nephilim are a nomadic, secretive race. This isolationism has only heightened the wild tales surrounding them, making it even harder for other races to trust them. While the ancient animosity humans once had against them has been largely forgotten, zealots occasionally try to mount pogroms and crusades to wipe the nephilim out forever. The nephilim have proven strikingly resistant to these efforts.